WHOLE CHARACTER
青qīng
green; blue (深绿色或浅蓝色); young (喻年轻: 青年, 青春)
青 is the color of young things: 青草 'green grass', 青菜 'greens', 青年 'young people'.
ZDIC: 会意 — the header line shows a blank glyph plus 月, while the detailed account names 生 and 丹 (从生,从丹). The modern pieces are reshaped, so both are shown as written shapes with the source's account kept distinct.
TOP: THE CROWN PIECE — LIKE 生 (NAMED IN THE DETAILED ACCOUNT) WITHOUT ITS FALLING STROKE
龶zhǔ
a bound crown piece: a vertical through three horizontals
A written-shape label for a crown top (like 生 without its falling stroke); a visual piece, not a taught word.
In 青: top: the crown piece — like 生 (named in the detailed account) without its falling stroke A bound written shape; shown as strokes, not taught as a word.
BOTTOM: WRITTEN LIKE THE MOON GRAPH 月 (STRAIGHT LEFT EDGE); THE DETAILED ACCOUNT ASSIGNS THIS PLACE TO 丹
月yuè
moon; month
月 can be the moon/month source or a flesh-related form in other characters; the distinction is stated where relevant.
In 青: bottom: written like the moon graph 月 (straight left edge); the detailed account assigns this place to 丹 Shown with its documented or clearly limited role.